<template>
    <div>
        <!-- 面包屑导航 -->
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>商品列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- end -->

        <!-- 卡片视图 -->
        <el-card>
            <el-row :gutter="20">
                <!-- 输入，搜索框 -->
                <el-col :span="6">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" @keyup.enter.native="getGoodsList" clearable @clear="getGoodsList">
                        <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
                    </el-input>
                </el-col>
                <!-- end -->

                <!-- 添加按钮 -->
                <el-col :span="4">
                    <el-button type="primary" @click="goAddPage">添加商品</el-button>
                </el-col>
                <!-- end -->

            </el-row>

            <!-- table 表格 -->
            <el-table :data="goodsList" border stripe>
                <el-table-column type="index" label="#">
                </el-table-column>

                <el-table-column label="商品名称" prop="goods_name">
                </el-table-column>

                <el-table-column label="商品价格(元)" prop="goods_price" width="105px">
                </el-table-column>

                <el-table-column label="商品重量" prop="goods_weight" width="105px">
                </el-table-column>

                <el-table-column label="创建时间" width="165px">
                    <template slot-scope="scope">
                        {{scope.row.add_time|dateFormat}}
                    </template>
                </el-table-column>

                <el-table-column label="操作" width="120px">
                    <template slot-scope="scope">
                        <el-button type="primary" icon="el-icon-edit" size="small">
                        </el-button>
                        <el-button type="danger" icon="el-icon-share" size="small"
                        @click="removeById(scope.row.goods_id)">
                        </el-button>
                    </template>
                </el-table-column>

            </el-table>
            <!-- end -->

            <!-- 分页 -->
            <el-pagination
            @size-change="handlePagSizeChange"
            @current-change="handleCurrentPagChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[5, 10, 15, 20]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total" background>
            </el-pagination>
            <!-- end -->
        </el-card>
        <!-- end -->
    </div>
</template>

<script>
export default {
  data() {
    return {
      // 查询参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      //  商品列表
      goodsList: [],
      //   总数据条数
      total: 0
    }
  },
  created() {
    this.getGoodsList()
  },
  methods: {
    //  根据分页获取对应的商品列表
    async getGoodsList() {
      const { data: res } = await this.$http.get('goods', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) return this.$message.error('获取商品列表失败！')
      this.$message.success('获取商品列表成功！')
      this.goodsList = res.data.goods
      this.total = res.data.total
    },
    //  单页显示条数改变时触发
    handlePagSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    // 当前页改变时触发
    handleCurrentPagChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    // 根据id删除数据
    async removeById(id) {
      const confirmResult = await this.$confirm('此操作将永久删除该数据, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') return this.$message.info('删除操作已取消！')
      const { data: res } = await this.$http.delete(`goods/${id}`)
      if (res.meta.status !== 200) this.$message.error('删除数据失败！')
      this.$message.success('删除数据成功!')
      this.getGoodsList()
    },
    // 跳转到添加商品页面
    goAddPage() {
      this.$router.push('/goods/add')
    }
  }

}
</script>

<style lang="less" scoped>

</style>
